<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<c:set var="ctx" value="${pageContext.request.contextPath}"/>
<c:set var="ctxStatic" value="${pageContext.request.contextPath}/static"/>

<script src="${ctxStatic}/plugins/jquery-v2.2.3/jquery-2.2.3.min.js" type="text/javascript"></script>
<link href="${ctxStatic}/plugins/bootstrap-v3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<script src="${ctxStatic}/plugins/bootstrap-v3.3.6/js/bootstrap.min.js" type="text/javascript"></script>
<script>
    function toIndex() {
        window.location.href = '${ctx}/';
    }
</script>